Lower pulley of side pressure door and window

Abstract

A side-pressing door and window lower pulley comprises a guide wheel seat in sliding fit with a door and window guide rail and a connecting seat connected to the bottom of a door and window, the connecting seat is in lateral sliding fit with the top of the guide wheel seat, the bottom of the connecting seat is provided with a connecting groove penetrating through the connecting seat in the lateral direction, and the top of the guide wheel seat is provided with a connecting part corresponding to the connecting groove. The connecting part is in sliding fit with the connecting groove; the bottom of the connecting base is provided with a first abutting face used for abutting against the guide wheel base, the top of the guide wheel base is provided with a second abutting face used for bearing the weight of the door and window, a sliding bearing is arranged between the first abutting face and the second abutting face, and the connecting base acts the weight of the door and window on the second abutting face through the first abutting face. In this way, the accessory cost can be saved, the structural stability can be improved, meanwhile, the sliding bearing is arranged between the first abutting face and the second abutting face, when the connecting base slides laterally, lateral sliding can be smoother through a wheel column of the sliding bearing, the structure is prevented from being abraded, and practicability is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of doors and windows, and in particular to a lower pulley for a side-pressure door and window. Background Art

[0002] The lower pulley of doors and windows is an accessory installed on doors and windows, usually located at the bottom or side of doors and windows, used to support and guide the movement of doors and windows. It can ensure that doors and windows can slide smoothly along the track when opening and closing, improving the user experience and safety of doors and windows.

[0003] Among the existing lower pulleys of doors and windows, reference can be made to a movable structure, a pulley and doors and windows disclosed in the Chinese utility model patent application number CN202222736104.1, which specifically includes a top bracket and a bottom bracket, a roller is provided on the bottom bracket, and a lateral movement component and a rebound component are provided between the top bracket and the bottom bracket; the lateral movement component includes a guide rail and a roller, the extension direction of the guide rail and the movement direction of the roller are arranged at an angle, the roller is arranged in the guide rail and can slide along the guide rail, so that the roller can move back and forth along the width direction of the bottom bracket; the rebound component includes an elastic element and a rotating shaft, the elastic element is arranged between the first ends of the top bracket and the bottom bracket, and the rotating shaft is rotatably connected to the second ends of the top bracket and the bottom bracket. A rebound component capable of adaptively adjusting the height is arranged on the movable structure of doors and windows, so that when the movable structure is applied to doors and windows, the height of the doors and windows can be adaptively adjusted, the stress condition of the doors and windows can be improved, the movable door leaf or window leaf is separated from the rubber strip before being pushed or pulled, so that it can move smoothly when pushed or pulled, and the window leaf has both the function of horizontal opening and pushing and the function of automatically adjusting the height. The service life of the movable structure of doors and windows is improved.

[0004] However, in the above structure, the top bracket is fixed to the bottom of the door and window, and the gravity of the door and window is transmitted to the rolling frame through the guide column connected to the top bracket. It can be determined that the rolling frame and the top bracket are connected only by the guide column. This structure has higher requirements on the structural stability of the guide column and the connecting parts used to fix the guide column, which will increase the cost of accessories; and this lateral sliding method through the guide column has greater resistance, which is easy to cause wear to the structure after long-term use, and has poor stability and low practicality. Utility Model Content

[0005] In order to overcome the deficiencies of the prior art, the utility model provides a lower pulley for a side-pressure door and window.

[0006] The technical solution adopted by the utility model to solve its technical problems is:

[0007] A lower pulley of a side-pressure door and window comprises a guide wheel seat that slides on the door and window guide rail and a connecting seat connected to the bottom of the door and window, the connecting seat slides sideways on the top of the guide wheel seat, the bottom of the connecting seat is provided with a connecting groove that penetrates the connecting seat laterally, the top of the guide wheel seat is provided with a connecting part corresponding to the connecting groove, and the connecting part slides with the connecting groove; the bottom of the connecting seat is provided with a first pressing surface for pressing on the guide wheel seat, the top of the guide wheel seat is provided with a second pressing surface for bearing the weight of the door and window, a sliding bearing is provided between the first pressing surface and the second pressing surface, and when the connecting seat slides sideways, the first pressing surface and the second pressing surface are pressed against the sliding bearing and slide relatively.

[0008] Furthermore, the connecting grooves are provided in two groups and are respectively arranged at the front and rear positions close to the ends of the connecting seat, and the connecting portion is provided with two groups of corresponding connecting grooves and are respectively arranged at the front and rear ends of the guide wheel seat.

[0009] In the utility model, the top of the first pressing surface and the bottom of the second pressing surface are further provided with pressing sheets for improving the structural strength, and the first pressing surface and the second pressing surface are in contact with the wheel column on the sliding bearing through the pressing sheets.

[0010] Furthermore, both the first pressing surface and the second pressing surface are provided with mounting grooves for mounting the pressing sheet, and the depth of the mounting groove on the second pressing surface is greater than the depth of the mounting groove on the first pressing surface.

[0011] Furthermore, after the pressing piece is mounted on the mounting groove on the first pressing surface, it is flush with the bottom surface of the first pressing surface. After the pressing piece and the sliding bearing are sequentially mounted in the mounting groove on the second pressing surface, the top surface of the sliding bearing is higher than the mounting groove.

[0012] Furthermore, the width of the sliding bearing is equal to the width of the mounting groove, and the length of the sliding bearing is less than the length of the mounting groove.

[0013] In the utility model, both ends of the bottom of the connection seat extend inwardly to form limiting portions, and the limiting portions abut against the bottom of the connection portion to limit the connection portion in the connection groove.

[0014] In the utility model, the guide wheel seat is provided with a pulley block for pressing against the door and window guide rails, and the pulley block comprises wheel frames connected to both sides of the guide wheel seat and guide wheels rotatably mounted between the wheel frames.

[0015] Furthermore, the middle parts of the wheel frames on both sides are connected to the guide wheel seats, and the guide wheels are provided with two groups, which are respectively installed at the two ends of the wheel frames, and the guide wheels are installed on the wheel frames through wheel axles.

[0016] The utility model has the following advantages and beneficial effects:

[0017] By setting a first pressure surface at the bottom of the connecting seat and a second pressure surface at the top of the guide wheel seat, the connecting seat applies the weight of the doors and windows to the second pressure surface through the first pressure surface. This not only saves the cost of accessories, but also improves the structural stability. At the same time, a sliding bearing is set between the first pressure surface and the second pressure surface. When the connecting seat slides laterally, the wheel column of the sliding bearing can make the lateral sliding smoother, avoid wear of the structure, and is more practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0019] Figure 1 This is a schematic diagram of the lower pulley in this embodiment;

[0020] Figure 2 This is a disassembled diagram of the lower pulley in this embodiment;

[0021] Figure 3 for Figure 2 Magnified view of area A. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model, but the utility model is not limited to the following embodiments.

[0023] like Figures 1 to 3As shown, the present embodiment discloses a lower pulley of a side-pressure door and window, comprising a guide wheel seat 1 slidably fitted on the door and window guide rail and a connecting seat 2 connected to the bottom of the door and window, wherein the connecting seat 2 is laterally slidably fitted on the top of the guide wheel seat 1, and the lateral sliding direction of the connecting seat 2 is perpendicular to the moving direction of the door and window, and the bottom of the connecting seat 2 is provided with a connecting groove 21 that penetrates the connecting seat 2 laterally, and the connecting groove 21 is provided with two groups and is respectively arranged at positions near the end at the front and rear ends of the connecting seat 2, and the top of the guide wheel seat 1 is provided with a connecting portion 11 corresponding to the two groups of connecting grooves 21, and the connecting portion 11 is connected to the connecting groove 2 1 sliding fit; specifically, a first pressing surface 22 for pressing against the guide wheel seat 1 is formed between the two groups of the connecting grooves 21, and a second pressing surface 12 for bearing the weight of the door and window is formed between the two groups of the connecting parts 11. A sliding bearing 6 for reducing the lateral sliding resistance of the connecting seat 2 is provided between the first pressing surface 22 and the second pressing surface 12. A plurality of wheel columns 60 arranged in sequence are rotatably fitted on the sliding bearing 6. The wheel column 60 is made of metal. When the connecting seat 2 slides laterally, the first pressing surface 22 and the second pressing surface 12 are pressed against the sliding bearing 6 and slide relatively. By setting a first pressure surface 22 at the bottom of the connecting seat 2 and a second pressure surface 12 at the top of the guide wheel seat 1, the connecting seat 2 applies the weight of the doors and windows to the second pressure surface 12 through the first pressure surface 22, which not only saves the cost of accessories but also improves the structural stability. At the same time, a sliding bearing 6 is set between the first pressure surface 22 and the second pressure surface 12. When the connecting seat 2 slides laterally, the wheel column 60 on the sliding bearing 6 can make the lateral sliding smoother, avoid wear of the structure, and have higher practicality.

[0024] In this embodiment, in order to prevent the wheel column 60 on the sliding bearing 6 from causing wear to the first pressure surface 22 and the second pressure surface 12, a pressure plate 7 for improving the structural strength is further provided at the top of the first pressure surface 22 and the bottom of the second pressure surface 12. The material of the pressure plate 7 is the same as that of the wheel column 60. The first pressure surface 22 and the second pressure surface 12 are in contact with the wheel column 60 on the sliding bearing 6 through the pressure plate 7, which can not only reduce wear but also further improve the smoothness of lateral sliding.

[0025] Furthermore, both the first pressure surface 22 and the second pressure surface 12 are provided with mounting grooves 70 for mounting a pressure sheet 7, the depth of the mounting groove 70 on the second pressure surface 12 is greater than the depth of the mounting groove 70 on the first pressure surface 22, and after the pressure sheet 7 is mounted in the mounting groove 70 on the first pressure surface 22, it is flush with the bottom surface of the first pressure surface 22, and after the pressure sheet 7 and the sliding bearing 6 are sequentially installed in the mounting groove 70 on the second pressure surface 12, the top surface of the sliding bearing 6 is higher than the mounting groove 70.

[0026] Furthermore, the width of the sliding bearing 6 is equal to the width of the mounting groove 70, and the length of the sliding bearing 6 is less than the length of the mounting groove 70. When the connecting seat 2 slides relative to the guide wheel seat 1, the sliding distance of the sliding bearing 6 in the mounting groove 70 is 1 / 2 of the sliding distance of the connecting seat 2.

[0027] In this embodiment, in order to prevent the connection part 11 from vertically detaching from the connection groove 21 , limiting parts 23 extend inwardly from both ends of the bottom of the connection seat 2 , and the limiting parts 23 abut against the bottom of the connection part 11 to limit the connection part 11 in the connection groove 21 .

[0028] In this embodiment, the guide wheel seat 1 is provided with a pulley group 8 for pressing against the door and window guide rails. The pulley group 8 includes a wheel frame 80 connected to both sides of the guide wheel seat 1 and a guide wheel 81 rotatably installed between the wheel frames 80. In order to maintain structural balance, the middle parts of the wheel frames 80 on both sides are connected to the guide wheel seat 1. The guide wheels 81 are provided with two groups. The two groups of guide wheels 81 are respectively installed at both ends of the wheel frames 80, and the guide wheels 81 are installed on the wheel frames 80 through wheel axles.

[0029] In this embodiment, a driving assembly for driving the connecting seat 2 to slide laterally is further provided at the top of the connecting seat 2, and the driving assembly includes a driving block 3 that slides along the moving direction of the door and window, a driving rod 5 that is snap-fitted with the driving block 3, and a guide column 4 that passes downward through the connecting seat 2 and is connected to the guide wheel seat 1. The top of the guide column 4 is guided and matched with the driving block 3. Specifically, a guide groove / guide hole 30 is provided on the driving block 3, and the extension direction of the guide groove / guide hole 30 is at an angle to the sliding direction of the driving block 3. The top of the guide column 4 slides and matches in the guide groove / guide hole 30, and the driving rod 5 is connected to the door and window handle. When the door and window handle is turned, the driving block 3 is driven to slide on the connecting seat 2 through the driving rod 5, and the driving block 3 cooperates with the guide column 4 through the guide groove / guide hole 30 to drive the connecting seat 2 to move laterally relative to the guide wheel seat 1.

[0030] The above contents described in this specification are merely examples of the present invention. Technicians in the technical field to which the present invention belongs can make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the contents of the present invention specification or exceed the scope defined by the claims, they should all fall within the protection scope of the present invention.

Claims

1. A lower pulley for a side-pressure door and window, comprising a guide wheel seat (1) slidably engaged on a door and window guide rail and a connecting seat (2) connected to the bottom of the door and window, wherein the connecting seat (2) is laterally slidably engaged with the top of the guide wheel seat (1), characterized in that: The bottom of the connecting seat (2) is provided with a connecting groove (21) which penetrates the connecting seat (2) in the lateral direction; the top of the guide wheel seat (1) is provided with a connecting portion (11) corresponding to the connecting groove (21); the connecting portion (11) and the connecting groove (21) are slidably matched; the bottom of the connecting seat (2) is provided with a first pressing surface (22) for pressing against the guide wheel seat (1); the top of the guide wheel seat (1) is provided with a second pressing surface (12) for bearing the weight of the door and window; a sliding bearing (6) is provided between the first pressing surface (22) and the second pressing surface (12); when the connecting seat (2) slides laterally, the first pressing surface (22) and the second pressing surface (12) are pressed against the sliding bearing (6) to slide relatively.

2. The lower pulley of a side pressure door and window according to claim 1, characterized in that: The connection grooves (21) are provided in two groups and are respectively arranged at positions close to the front and rear ends of the connection seat (2); the connection parts (11) are provided in two groups corresponding to the connection grooves (21) and are respectively arranged at the front and rear ends of the guide wheel seat (1).

3. The lower pulley of a side pressure door and window according to claim 1, characterized in that: A pressing sheet (7) for improving structural strength is also provided at the top of the first pressing surface (22) and the bottom of the second pressing surface (12); the first pressing surface (22) and the second pressing surface (12) are in contact with the sliding bearing (6) via the pressing sheet (7).

4. The lower pulley of a side pressure door and window according to claim 3, characterized in that: The first pressing surface (22) and the second pressing surface (12) are both provided with a mounting groove (70) for mounting the pressing sheet (7), and the depth of the mounting groove (70) on the second pressing surface (12) is greater than the depth of the mounting groove (70) on the first pressing surface (22).

5. The lower pulley of a side pressure door and window according to claim 4, characterized in that: After the pressing sheet (7) is mounted on the mounting groove (70) on the first pressing surface (22), it is flush with the bottom surface of the first pressing surface (22); after the pressing sheet (7) and the sliding bearing (6) are sequentially mounted in the mounting groove (70) on the second pressing surface (12), the top surface of the sliding bearing (6) is higher than the mounting groove (70).

6. The lower pulley of a side pressure door and window according to claim 5, characterized in that: The width of the sliding bearing (6) is equal to the width of the mounting groove (70), and the length of the sliding bearing (6) is less than the length of the mounting groove (70).

7. The lower pulley of a side pressure door and window according to claim 1, characterized in that: Both ends of the bottom of the connection seat (2) extend inwardly to form limiting portions (23), which abut against the bottom of the connection portion (11) to limit the connection portion (11) in the connection groove (21).

8. The lower pulley of a side pressure door and window according to claim 1, characterized in that: The guide wheel seat (1) is provided with a pulley block (8) for pressing against the door and window guide rails, and the pulley block (8) comprises a wheel frame (80) connected to both sides of the guide wheel seat (1) and a guide wheel (81) rotatably mounted between the wheel frames (80).

9. The lower pulley of a side pressure door and window according to claim 8, characterized in that: The middle parts of the wheel frames (80) on both sides are connected to the guide wheel seats (1), and two groups of guide wheels (81) are provided. The two groups of guide wheels (81) are respectively mounted on the two ends of the wheel frames (80), and the guide wheels (81) are mounted on the wheel frames (80) via wheel axles.

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